Turn dircache on if it is off, also see the second point.
Right, it was off. Now it's as fast as before. Thanks a lot for quick answer.
Try checking the disk to see if it is corrupted - "chkdsk" on Windows, "fsck.vfat" on linux.
Concerning the freeze on dynamic list, I've done a chkdsk and the program reported some errors. I've done a chkdsk /f to fix problems. I will report the result after some testing.
Anyway, thanks for fast & expert support, that is service !
--------------------September, 20th ---------
--> After some testing, I'm was able to reproduce the sequence that made rockbox freeze (and crash)
-I start playback from one directory (e.g. /Warren Suicide/The Hello/)
- Go to another directory, then use "insert next"
- Go to another directory, ask to start playback on any track, reply yes to delete the dynamic playlist... here is the crash pressing "select"
I did many tries on different music files with the same result.
So I did two things :
- Remove all the cover.100x100.jpg files,
- initialise the database, also I don't use it ('cause I navigate faster with file browsing).
Now the sequence does not crash rockbox. As I'm not a developper, I just give the info in case one of you is interrested in that behaviour.